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Asad Ullah
Department of Mechanical Engineering, Baluchistan university of Information & Technology, Engineering and Management Sciences (BUITEMS), Quetta 87300, Pakistan

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Journal article
Published: 15 October 2020 in Sustainability
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A piperazine (PZ)-promoted methyldiethanolamine (MDEA) solution for a carbon dioxide (CO2) removal process from the flue gas of a large-scale coal power plant has been simulated. An Aspen PlusĀ® was used to perform the simulation process. Initially, the effects of MDEA/PZ concentration ratio and stripper pressure on the regeneration energy of CO2 capture process were investigated. The MDEA/PZ concentration ratio of 35/15 wt.% (35 wt. MDEA and 15 wt.% PZ) was selected as an appropriate concentration. The reboiler duty of 3.235 MJ/kg CO2 was obtained at 35/15 wt.% concentration ratio of MDEA/PZ. It was considered a reference or base case, and process modifications including rich vapor compression (RVC) process, cold solvent split (CSS), and the combination of both processes were investigated to check its effect on the energy requirement. A total equivalent work of 0.7 MJe/kg CO2 in the RVC and a reboiler duty of 2.78 MJ/kg CO2 was achieved in the CSS process. Similarly, the total equivalent work, reboiler duty, and condenser duty of 0.627 MJe/kg CO2, 2.44 MJ/kg CO2, and 0.33 MJ/kg CO2, respectively, were obtained in the combined process. The reboiler duty and the total equivalent work were reduced by about 24.6 and 16.2%, respectively, as compared to the reference case. The total energy cost saving was 1.79 M$/yr. Considering the additional equipment cost in the combined process, the total cost saving was 0.67 M$ per year.

ACS Style

Bilal Alam Khan; Asad Ullah; Muhammad Wajid Saleem; Abdullah Nawaz Khan; Muhammad Faiq; Mir Haris. Energy Minimization in Piperazine Promoted MDEA-Based CO2 Capture Process. Sustainability 2020, 12, 8524 .

AMA Style

Bilal Alam Khan, Asad Ullah, Muhammad Wajid Saleem, Abdullah Nawaz Khan, Muhammad Faiq, Mir Haris. Energy Minimization in Piperazine Promoted MDEA-Based CO2 Capture Process. Sustainability. 2020; 12 (20):8524.

Chicago/Turabian Style

Bilal Alam Khan; Asad Ullah; Muhammad Wajid Saleem; Abdullah Nawaz Khan; Muhammad Faiq; Mir Haris. 2020. "Energy Minimization in Piperazine Promoted MDEA-Based CO2 Capture Process." Sustainability 12, no. 20: 8524.